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arXiv 2501.06256cs.CLcs.AIcs.LG
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解锁自然数据集上超越语言建模的上下文学习能力

Unlocking In-Context Learning for Natural Datasets Beyond Language Modelling

Computer Vision Group, University of Freiburg(弗赖堡大学计算机视觉组);Neuromedical A.I. Lab, Medical Center -- University of Freiburg(弗赖堡大学医学神经AI实验室);Medical Physics, Medical Center -- University of Freiburg(弗赖堡大学医学物理);Visual Geometry Group, University of Oxford(牛津大学视觉几何组)

Jelena Bratulić, Sudhanshu Mittal, David T. Hoffmann, Samuel Böhm, Robin Tibor Schirrmeister, Tonio Ball, Christian Rupprecht, Thomas Brox

AI总结:

该研究揭示了大语言模型中上下文学习(ICL)涌现的关键特性,提出训练数据词元重复与任务难度的重要作用,并将相关见解应用于视觉数据集与EEG分类任务,解锁了多模态场景下的ICL能力。

摘要:

大语言模型(LLMs)具备上下文学习(ICL)能力,该能力使模型仅需根据上下文中提供的示例即可执行新任务,无需更新模型权重。尽管ICL可实现自然语言任务与领域间的快速适配,但在文本以外的模态中,其涌现机制尚不明确。本研究系统揭示了LLMs中支持自回归模型及多模态ICL涌现的特性,推动了ICL所需机制的学习。我们发现训练数据序列中的精确词元重复是ICL的重要影响因素,这类重复可进一步提升ICL性能的稳定性并降低瞬态性。此外,我们强调了训练任务难度对ICL涌现的重要性。最后,通过应用我们关于ICL涌现的新见解,我们在多种视觉数据集及更具挑战性的EEG分类任务上解锁了ICL能力。

英文摘要:

Large Language Models (LLMs) exhibit In-Context Learning (ICL), which enables the model to perform new tasks conditioning only on the examples provided in the context without updating the model's weights. While ICL offers fast adaptation across natural language tasks and domains, its emergence is less straightforward for modalities beyond text. In this work, we systematically uncover properties present in LLMs that support the emergence of ICL for autoregressive models and various modalities by promoting the learning of the needed mechanisms for ICL. We identify exact token repetitions in the training data sequences as an important factor for ICL. Such repetitions further improve stability and reduce transiency in ICL performance. Moreover, we emphasise the significance of training task difficulty for the emergence of ICL. Finally, by applying our novel insights on ICL emergence, we unlock ICL capabilities for various visual datasets and a more challenging EEG classification task.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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